Relative mass Flashcards
1
Q
Which letter represents mass number?
A
A
2
Q
Which letter represents atomic number?
A
Z
3
Q
What is the definition of relative atomic mass (Ar)?
A
Average mass of an atom of an element/ 1/12 the mass of an atom of C12
4
Q
How do you calculate relative atomic mass?
A
Sum of (Isotope abundance x Isotope mass number)/ Sum of abundances of all the isotopes
5
Q
What is the definition of relative isotopic mass?
A
The mass of an atom of an isotope/ 1/12 the mass of an atom of C12
6
Q
What is the definition of relative molecular mass (Mr)?
A
Average mass of a molecule / 1/12th mass of an atom of C12
